Javascript 如何从渲染器进程调用Electron API方法?
我已经试了一段时间了。我遵循了这个原则,并成功地使用Bootstrap和Jquery制作了一个“应用程序” 但现在,我尝试使用Electron API方法,但没有成功 我创建了一个浏览器窗口,并在该窗口中添加了一个新的JS文件。在该文件中,我尝试在此处调用printToPDF方法: 它就是不工作,控制台会记录以下内容: 未捕获引用错误:未定义主窗口 代码如下: main.jsJavascript 如何从渲染器进程调用Electron API方法?,javascript,jquery,electron,Javascript,Jquery,Electron,我已经试了一段时间了。我遵循了这个原则,并成功地使用Bootstrap和Jquery制作了一个“应用程序” 但现在,我尝试使用Electron API方法,但没有成功 我创建了一个浏览器窗口,并在该窗口中添加了一个新的JS文件。在该文件中,我尝试在此处调用printToPDF方法: 它就是不工作,控制台会记录以下内容: 未捕获引用错误:未定义主窗口 代码如下: main.js const electron = require('electron') const app = electron.ap
const electron = require('electron')
const app = electron.app
const BrowserWindow = electron.BrowserWindow
let mainWindow
function createWindow () {
mainWindow = new BrowserWindow({width: 800, height: 600})
mainWindow.loadURL(`file://${__dirname}/index.html`)
mainWindow.webContents.openDevTools()
mainWindow.on('closed', function () {
mainWindow = null
})
}
app.on('ready', createWindow)
app.on('window-all-closed', function () {
if (process.platform !== 'darwin') {
app.quit()
}
})
app.on('activate', function () {
if (mainWindow === null) {
createWindow()
}
})
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Hello World!</title>
<link rel="stylesheet" type="text/css" href="./css/bootstrap.min.css">
</head>
<body>
</body>
<script>window.$ = window.jQuery = require('jquery');</script>
<script type="text/javascript" src="./js/bootstrap.min.js"></script>
<script>
require('./app.js');
</script>
</html>
查看仪表板组合仪表(ipc)模块和。ipc模块允许您在主进程和渲染进程之间发送和接收同步和异步消息 下面是应用程序中的打印到PDF示例 渲染器进程
const ipc = require('electron').ipcRenderer
const printPDFBtn = document.getElementById('print-pdf')
printPDFBtn.addEventListener('click', function (event) {
ipc.send('print-to-pdf')
})
ipc.on('wrote-pdf', function (event, path) {
const message = `Wrote PDF to: ${path}`
document.getElementById('pdf-path').innerHTML = message
})
const fs = require('fs')
const os = require('os')
const path = require('path')
const electron = require('electron')
const BrowserWindow = electron.BrowserWindow
const ipc = electron.ipcMain
const shell = electron.shell
ipc.on('print-to-pdf', function (event) {
const pdfPath = path.join(os.tmpdir(), 'print.pdf')
const win = BrowserWindow.fromWebContents(event.sender)
// Use default printing options
win.webContents.printToPDF({}, function (error, data) {
if (error) throw error
fs.writeFile(pdfPath, data, function (error) {
if (error) {
throw error
}
shell.openExternal('file://' + pdfPath)
event.sender.send('wrote-pdf', pdfPath)
})
})
})
主流程
const ipc = require('electron').ipcRenderer
const printPDFBtn = document.getElementById('print-pdf')
printPDFBtn.addEventListener('click', function (event) {
ipc.send('print-to-pdf')
})
ipc.on('wrote-pdf', function (event, path) {
const message = `Wrote PDF to: ${path}`
document.getElementById('pdf-path').innerHTML = message
})
const fs = require('fs')
const os = require('os')
const path = require('path')
const electron = require('electron')
const BrowserWindow = electron.BrowserWindow
const ipc = electron.ipcMain
const shell = electron.shell
ipc.on('print-to-pdf', function (event) {
const pdfPath = path.join(os.tmpdir(), 'print.pdf')
const win = BrowserWindow.fromWebContents(event.sender)
// Use default printing options
win.webContents.printToPDF({}, function (error, data) {
if (error) throw error
fs.writeFile(pdfPath, data, function (error) {
if (error) {
throw error
}
shell.openExternal('file://' + pdfPath)
event.sender.send('wrote-pdf', pdfPath)
})
})
})
查看仪表板组合仪表(ipc)模块和。ipc模块允许您在主进程和渲染进程之间发送和接收同步和异步消息 下面是应用程序中的打印到PDF示例 渲染器进程
const ipc = require('electron').ipcRenderer
const printPDFBtn = document.getElementById('print-pdf')
printPDFBtn.addEventListener('click', function (event) {
ipc.send('print-to-pdf')
})
ipc.on('wrote-pdf', function (event, path) {
const message = `Wrote PDF to: ${path}`
document.getElementById('pdf-path').innerHTML = message
})
const fs = require('fs')
const os = require('os')
const path = require('path')
const electron = require('electron')
const BrowserWindow = electron.BrowserWindow
const ipc = electron.ipcMain
const shell = electron.shell
ipc.on('print-to-pdf', function (event) {
const pdfPath = path.join(os.tmpdir(), 'print.pdf')
const win = BrowserWindow.fromWebContents(event.sender)
// Use default printing options
win.webContents.printToPDF({}, function (error, data) {
if (error) throw error
fs.writeFile(pdfPath, data, function (error) {
if (error) {
throw error
}
shell.openExternal('file://' + pdfPath)
event.sender.send('wrote-pdf', pdfPath)
})
})
})
主流程
const ipc = require('electron').ipcRenderer
const printPDFBtn = document.getElementById('print-pdf')
printPDFBtn.addEventListener('click', function (event) {
ipc.send('print-to-pdf')
})
ipc.on('wrote-pdf', function (event, path) {
const message = `Wrote PDF to: ${path}`
document.getElementById('pdf-path').innerHTML = message
})
const fs = require('fs')
const os = require('os')
const path = require('path')
const electron = require('electron')
const BrowserWindow = electron.BrowserWindow
const ipc = electron.ipcMain
const shell = electron.shell
ipc.on('print-to-pdf', function (event) {
const pdfPath = path.join(os.tmpdir(), 'print.pdf')
const win = BrowserWindow.fromWebContents(event.sender)
// Use default printing options
win.webContents.printToPDF({}, function (error, data) {
if (error) throw error
fs.writeFile(pdfPath, data, function (error) {
if (error) {
throw error
}
shell.openExternal('file://' + pdfPath)
event.sender.send('wrote-pdf', pdfPath)
})
})
})
在提供的html/js中,您无法访问
main.js
中的任何内容。您可以在app.js
中创建一个函数来发出事件,然后在main.js
中侦听该事件并调用mainWindow.webContents.printToPDF()当事件被触发时,code>会出现在那里。在您的html/js中,您无法访问main.js
中的任何内容。您可以在app.js
中创建一个函数来发出事件,然后在main.js
中侦听该事件并调用mainWindow.webContents.printToPDF()代码>当事件被触发时,将显示在那里。谢谢。这正是我想要的。我仍在尝试找出这个“模块”模式。谢谢。这正是我想要的。我仍在试图找出这种“模块”模式。